摘要： Inspired by a profound observation on the Racah–Wigner coefficients of Uq(sl2), the Askey–Wilson algebras were introduced in the early 1990s. A universal analog △q of the Askey–Wilson algebras was recently studied. For q not a root of unity, it is known that Z(△q) is isomorphic to the polynomial ring of four variables. A presentation for Z(△q) at q a root of unity is displayed in this paper. As an application, a presentation for the center of the double affine Hecke algebra of type (C1∨,C1) at roots of unity is obtained. 出版者： Elsevier B.V 出版日期： 2016-08 出處： Nuclear physics. B, 2016-08, Vol.909 (C), p.260-296 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2016 The Author(s) 識別號： ISSN: 0550-3213 識別號： ISSN: 1873-1562 識別號： EISSN: 1873-1562 識別號： DOI: 10.1016/j.nuclphysb.2016.05.006
